What was that called?

[Chalked]

Remembering back to college, 33 years ago. We used to use a tool to form compression rings on copper tube. It worked on 15 & 22mm, had a "t" bar handle and was inserted into the cut end. This was then turned and a ball bearing was forced out.This made a ring for a compression fitting.

have never used or seen one since.

can anyone remember them. Or why they were called?

 

[rpm]

Once made a ring for a finger out of half a crown and polished it up, jeez that was a long time ago.
Can`t for the life of me remember how though.

 

[turnpin]

A kingly tool I believe ...but it has been a while...lol regards Turnpin:25:

 

[rpm]

For the young members a half a crown was once a coin.

 

[PlumbBobBob]

For the young members a half a crown was once a coin.

2 and a half shillings

 

[Chalked]

A kingly tool I believe ...but it has been a while...lol regards Turnpin:25:

Thats it.
going to search now.

 

[Chalked]

Found it

 

[rpm]

Correct but how the hell did I make a ring out of a coin using a small ball pein hammer?

 

[Chalked]

Correct but how the hell did I make a ring using a small ball pein hammer?

With difficulty!:bigear:

 

[rpm]

Nah! it was easy but took time.
Tap, Tap, Tap then turn it round and start again, took hours.

 

[lame plumber]

2 and a half shillings

25 pence actually

 

[stani]

12 1/2 pence actually

 

[lame plumber]

12 1/2 pence actually

testing testing thinking of a crown

 

[mike-c]

Sure I've got one of those that does 15, 22, and 28mm.
It was handy for connecting pipework direct to old sink and bath taps using old compression nuts from the scrap box.

 

[Ermintrude]

I like your thinking grandad!